Shanghai Daoqin Plastics Co., Ltd.

今天 has 客户问我: TPU胶粒 foaming process in what to do? 鼎誉发现网 upper has very more similar this issues, its 实TPU胶粒变黄 is it features, TPU胶粒 in gas in absorption gas in water separation 而变白 or this is processing process in add additives 迁移出, need is anti 止TPU胶粒变黄?

1, day light 照射PU. PU存放区域应 anionic 凉通风, meanwhile PU can use plastics bag 封包放置 in cationic light 照射 方.

2, resistant paint. paint usually has types 形式, types is inner 喷施, types is outer 喷施, resistant paint 喷施会 in PU formed product surface formed types 保护层, 避免PU table/sheet and large gas 接触而污染 yellowing, this type of currently already by use.

3, add resistant agent. is add strong/high PU formed product resistant can force, need in raw materials in add types specialized resistant resistant agent, is resistant agent price 昂贵, in use resistant agent 时也应衡 amount its 经济效益, 如我们 black type for yellowing 就不敏感, therefore can use relatively 便宜 未添 add resistant agent non resistant raw materials, due to resistant agent is types raw materials additives, it add 于A formed in, 我们配 material requirements 搅拌 就 is is distribution uniform, to resistant 黄效果, 否则会出现 local yellowing phenomenon.

4, use good mixed combined ratio. good ratio/proportion can make I liquid and P liquid to most separation mixed combined reaction 而不会 has full 反映部 separation, has this phenomenon 出现时会 make formed product resistant hydrolysis, resistant can force large large reduce, especially is ratio/proportion in ISO偏 more accelerated formed product yellowing.

5, 避免人工操 as process in 污染. has relatively more PU formed product in or process in by 污染而 generate yellowing 如人体汗 liquid and has machine solvent agent and other, therefore PU products need especially attention/notes 接触体 dry 净, meanwhile can can decrease/reduce 整理程序.

deep 圳市鼎誉 new material has company is 一家集 high elastomer, engineering plastics R&D, production, sales 于一体 enterprise. 我们以专业 fine Technical Service is make 命, is 客户创造 most large value is 宗旨, toward provide stability quality environmental protection product is 己任, 不断努 force innovation technology, independent Brand, true and quality 服务于 market. and large 同仁携手共进, 共创美 good future.